Calender rack



F. M. MORTON May 27 1924.

CALENDER RACK Filed Oct. 22. 1923 moe/wtoz 02/022 In order to obtain the desired pressure on Patented May 27, 1924.

i .5 N I FRANK M. MORTON, OF PHOENIX CITY, ALABAMA.

GALENDER RACK.

Application filed October 22, 1923. Serial No. 670,121.

T 0 all whom it may concern.

Be it known that I, FRANK M. MORTO a citizen of the United States, residing at Phoenix City, in the county of Lee and State of Alabama, have invented certain new and useful Improvements'in Calender Racks; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it and use the same. r

In textile mills, the stock is run through picking machinery to clean the same and produce a lap of' uniform thickness. The stock at this stage is very light and fluffy, and in order to produce a compact lap or roll, the stock is wound by calender rolls onto a lap pin. This lap pin is held down I 'at'both' ends by calender racks geared to a common shaft, the-turning of which is retarded by a friction drum, weight and lever.

the lap pin, the correct amount of friction must be applied to the friction drum, but often the train of gears between the calender racks and I the friction drum, becomes choked, or excessive friction is appliedto the friction drum. In either instance, the pressure of the lap pin on thecalender racks, becomes so great asto break said racks or other parts of the machine.

It is the object of my invention to prevent occurrences suchas those above enumerated,- by the provision of an improved rack,in whichthe lap pin bearing head is connected in a unique manner with the rack proper, so that when unusual tension is placed on these parts, the head is released from and slides on the rack.

A further object is to provide means. for

' checking the sliding of the head on the rack,

holding it until still' -greater strain is encountered and then again releasing the strain, if the machine is not given proper attention after the first sliding movement of the head takes place.

With the foregoing in View, the invention resides-in the novel subject matter hereinafter described and claimed, the description being supplemented by the accompanying drawing. 7

Figure 1 is a vertical sectional view partly in elevation, showing the normal relation of parts.

Figure 2 is a vertical'sectional view on the irregular line 22 of Fig. 1,

appertains to make.

Figure 3 is duplicate of a portion of Fig. 1, but illustrating the manner in which the head is released from operative engage-- ment with the rack.

In the'drawing above briefly described, the numeral 1 designates an upright rack having teeth 2 for engagement with the usual gears or pinions. A head 3 is provided at'the upper end of the rack 1 for en gagement with the lap pin 4, said head having suitably mounted bearing rollers 5 and 6 to contact with said pin. From top to bottom, the head 3 is formed with a vertical guideway 7 which is laterally offset from.

the axes of the rollers 5 and 6, said guide- Way slidably receiving the straight upper mined amountof strainisupwardly exerted on said head (see Fig. 3).

In theiconstruction shown, an angular metal plate '9, preferably formed of steel, has one'of its arms 10 extended across and beyond the upper extremity of the rack 1,

downwardly. along the side of the'rack remotexfrom the rollers 5;and 6. The lower end of the arm 11 constitutes a shoulder which normally bears against a wear-plate 12Jat the upperend of the guideway'l,

thereby establishing an operative connection between the rack and the head 3Q Strainreleased. means are provided, however, whereby the head 3 may laterally shift as shown in Fig; 3, to disengage the arm 11 from the wear-plate 12, thus permitting the head 3. to'slide freely on the straight upper end 8 of the rack 1.

In the preferred form of construction, a

while the other arm,of said plate extends horizontal guide 13} is formed in the upper 1 portion of the head 3, said guide contain ing a plunger 1 1 and a compression spring 15 for forcing said plunger intocontact with theupper end 8 ofthe rack '1. The

' strength of the spring may be adjustedlas required by suitable means 16. This arrangement normally holds the-head in opattention, the head will eventually contactv with the projecting end of the arm which constitutes an abutment to again connect the head with the shank, permitting the ma chine to continue in operation as long as the upward strain on the head 3 is below a second predetermined amount. When such excessive strain however is encountered, a bolt 17 which secures the plate 9 to the rack 1, is intended to break, thus giving a second safety release.

It will be seen from the foregoing that I have provided a simple and inexpensive,

' yet an efficient and desirable arrangement of parts to prevent injury to any of the ele ments of the machine, in case of severe upward strain upon the head 3. Further- 'more, it will be seen that I have produced a calender rack having two safety releases.

of obvious advantage.

As excellent results are obtainable from the details disclosed, they may be followed if desired, but within the scope of the in- V vention as claimed, numerous modifications may be made.

I claim: a 1. A device of the class described comprising a rack, a lap pin bearing head having a longitudinally slidable connection with 7 said rack, interv-engageable elements carried by sald rack and said head to operatively connect said head to said rack and normally prevent said head fromsliding upon said rack, and yieldable means-to normally'hold said elements in engagement, said means being releasable when greater than normal pressure is applied tosaidhead.

2. A device of the class described comprising a rack, a lap pin bearing head slid- :them and disengageable from each other by lateral shifting of the head, and strainreleasable means for normally preventing such shifting. I V V e 4;. A device 'of the class described 'com-- prising a rack, a lap pin bearing head having a gulde slidably receivlng sald rack in amanner to permit lateral shifting of the 7 head on the rack, said rack having a shoulder contacting with one end of said guide and releasable therefrom by lateral shifting of the head on the rack, and strain-releasable means for normally preventing such shifting.

said strain-releasable means comprlsing a spring device acting on said head and reacting on said rack. I a

6. A structure as specifiedin-claim 4;, said head having another guide tr ansverse to and opening into the first named guide; said strain-releasable means comprising a 5. A structure as specified in claim 2;

spring device in said other guide acting against said head and re -acting againstsaid rack. V

7 7 A device of the class described comprismg a rack, a lap pin bearing {head on said. rack movable from a normal working position toa second working position,

strain-releasable means for a holding said head in said normal working p osition, and straln-releasablemeans for check1ng said head when the latter moves to said second working position.

8. A device of the class described comprising a rack, a lap pin bearing head'slidable on said rack and laterally shiftable with respect thereto, a shoulder on the rack for holding the head against sliding on said rack until laterally shifted, strain-releasable" l meansfor normally preventing such shifting, an abutment for checking the sliding of the'h'ead on the rack when released from said shoulder, and strain-releasable means securing said abutment to saidfrack.

9. A device of the class described com prising a rack, a lap pin bearing head having a guide through which one end of said rack passes slldably and ma 'manner to permit lateral shifting of the head on the rack, strain-releasable means for normally holding said head against such shifting, an angular plate having one arm extending across the end of said rack and projecting laterally from the latter in spaced relation with said head, the other arm of saidplate extending along-the rack into contact with said guide to hold the head against sliding until released by lateral shifting, and strain affixed my signature.

breakable means securing said plate to said rack. e

. V '110 Inrtestimony whereof I have :here nto FRANK M. MORTON. V 

